package se.janlindblom.ordning.typ;

/**
 * $Id: Half.java 117 2009-12-15 18:50:17Z lindblom.jan $
 * 
 * Copyright (c) 2009, Jan Lindblom
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 * * Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * 
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * 
 * * Neither the name of the project nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without
 *   specific prior written permission.
 *   
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 */

import se.janlindblom.ordning.Typ;
import se.janlindblom.ordning.typ.samling.Quarters;

/**
 * Half - two {@link Quarter}s.
 * 
 * @author Jan Lindblom (lindblom.jan@gmail.com)
 * @version $Rev: 117 $
 */
public class Half implements Typ {
	private Quarters quarters;
	
	/**
	 * Creates an empty Half with room for two {@link Quarter}s.
	 */
	public Half() {
		quarters = new Quarters(2);
	}
	
	/**
	 * Pushes a {@link Quarter} to the stack.
	 * 
	 * @param quarter the {@link Quarter} to push
	 * @return the pushed {@link Quarter} or null if this Half is full.
	 */
	public Quarter push(Quarter quarter) {
		return quarters.push(quarter);
	}
}
